Date: Sun, 1 Nov 1998 16:14:50 -0800 (PST) From: Alex Nash <alex@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: cvs commit: src/sys/alpha/alpha machdep.c Message-ID: <199811020014.QAA24134@freefall.freebsd.org>
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alex 1998/11/01 16:14:50 PST
Modified files:
sys/alpha/alpha machdep.c
Log:
Optimize bzero() by unrolling the aligned quadword loop and moving the length
manipulation away from the length comparison. Measurements on beast.cdrom.com
show >3X improvement over the original code on large block sizes, putting the
performance on par with the optimized assembly code in libc.
Revision Changes Path
1.20 +14 -2 src/sys/alpha/alpha/machdep.c
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